National Research Council (U.S.). Committee on Federal Aviation Administration Aviation Safety Inspector Staffing Standards, ebrary, Inc, Howell, W. C., & Van Hemel, S. B. (2007). Staffing standards for aviation safety inspectors. The National Academies Press.
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Chicago-viite (17. p.)
National Research Council (U.S.). Committee on Federal Aviation Administration Aviation Safety Inspector Staffing Standards, Inc ebrary, William Carl Howell, ja Susan B. Van Hemel. Staffing Standards for Aviation Safety Inspectors. Washington, D.C.: The National Academies Press, 2007.
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MLA-viite (9. p.)
National Research Council (U.S.). Committee on Federal Aviation Administration Aviation Safety Inspector Staffing Standards, et al. Staffing Standards for Aviation Safety Inspectors. The National Academies Press, 2007.
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